import React, { useState } from 'react'
import { Navigate } from 'react-router-dom'

export default function Home() {
  const [sum, setSum] = useState(1)
  // setSum(sum)({

  // })
  return (
    <div>
      <h3>我是Home的内容</h3>
      {sum===2?<Navigate to='/about'/>:<h4>当前sum值是:{sum}</h4>}
      <h4>当前sum的值是：{sum}</h4>
      <button onClick={()=>{setSum(2)}}>点我将sum变为2</button>
    </div>
  )
}
